Fixes crash when message IDS_EXTENSION_PACK_DIALOG_SUCCESS_BODY_NEW has non-ASCII characters.
Fixes crash when message IDS_EXTENSION_PACK_DIALOG_SUCCESS_BODY_NEW has non-ASCII characters.

BUG=30736
TEST=Open chrome with --lang=sr and try to pack extension. It shouldn't crash, and files with be generated.

Review URL: http://codereview.chromium.org/503051

git-svn-id: de016e52bd170d2d4f2344f9bf92d50478b649e0@34957 0039d316-1c4b-4281-b951-d872f2087c98

Crystalnix/house-of-life-chromium,adobe/chromium,Crystalnix/house-of-life-chromium,yitian134/chromium,yitian134/chromium,ropik/chromium,adobe/chromium,gavinp/chromium,gavinp/chromium,adobe/chromium,gavinp/chromium,Crystalnix/house-of-life-chromium,adobe/chromium,yitian134/chromium,ropik/chromium,ropik/chromium,ropik/chromium,adobe/chromium,Crystalnix/house-of-life-chromium,gavinp/chromium,yitian134/chromium,Crystalnix/house-of-life-chromium,Crystalnix/house-of-life-chromium,yitian134/chromium,gavinp/chromium,yitian134/chromium,gavinp/chromium,ropik/chromium,Crystalnix/house-of-life-chromium,adobe/chromium,gavinp/chromium,adobe/chromium,adobe/chromium,yitian134/chromium,ropik/chromium,adobe/chromium,Crystalnix/house-of-life-chromium,yitian134/chromium,yitian134/chromium,gavinp/chromium,adobe/chromium,yitian134/chromium,gavinp/chromium,Crystalnix/house-of-life-chromium,Crystalnix/house-of-life-chromium,ropik/chromium,adobe/chromium,Crystalnix/house-of-life-chromium,gavinp/chromium,ropik/chromium,ropik/chromium